visible light, ultraviolet or X-rays. The specific properties of a semiconductor depend on the impurities -- known as dopants -- added to it. This makes it an ideal medium to control electricalcurrentand every
Spot UV is a popular coating technique where high-gloss UV coating is applied to a product, by using ultraviolet (UV) light to cure the printed material’s varnish. This spot UV printing method gives the targeted “spots” a shiny, vibrant aesthetic, and adds a protective coating to the ...
When the weather is good,I usually go to the country.若是天气好的话,我总是到乡下去。Hardly had I opened the door when I hit him.我刚刚打开门就撞到他。He sold it for 10 dollars when everyone else sold it for 12.别人卖12元,他却卖10元 【where】Where did she get the ne...
EPROM (Erasable Programmable Read-Only Memory):EPROM chips can be rewritten multiple times using ultraviolet light exposure through an eraser window on the chip package. This type of chip is often used to store BIOS settings in PC motherboards or game consoles. ...
Earth's surface was now protected from harmful ultraviolet radiation, and new forms of life were free to evolve in the open air. When you see a picture of Earth, such as from a space station, you see how incredibly thin the protective atmosphere is, this thin film which was made by ...
CO2 lasers are also universally used for etching natural stone. DPSS Diode-pumped solid-state lasers can deliver high power output in the green or ultraviolet and have excellent beam quality. This makes them a desirable source for two specific types of etching applications. The first is with...
uvled curing light source is more and more widely used, uvled light source is divided into point light source, line light source, surface light source and other types. uvled light source through a fixed band of LED irradiation head to produce a certain band of ultraviolet light, used to ...
EPROM (erasable programmable read-only memory) ismemorythat does not lose its data when the power supply is cut off. The data can be erased and the chip reprogrammed by shining an intense ultraviolet (UV) light through a window designed into the memory chip. This process is known asburning...
.[24][25] The ozone layer of the Earth's atmosphere plays an important role in depleting the amount of ultraviolet (UV) radiation that reaches the surface. As DNA is readily damaged by UV light, this serves to protect life at the surface. The atmosphere also retains heat during the ...
tablet coatings and syrups. It is also used in sunscreens to block UVA and UVB rays, similar to zinc oxide. Titanium dioxide has excellent ultraviolet (UV) resistant qualities and acts as a UV absorbent. It is also used as a component of orthopedic implant biomaterials for hip and knee repl...